﻿jQuery.cookie = function(name, value, options) {    
    if (typeof value != 'undefined') { // name and value given, set cookie    
        options = options || {};    
        if (value === null) {    
            value = '';    
            options.expires = -1;    
        }    
        var expires = '';    
        if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {    
            var date;    
            if (typeof options.expires == 'number') {    
                date = new Date();    
                date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));    
            } else {    
                date = options.expires;    
            }    
            expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE    
        }    
        var path = options.path ? '; path=' + (options.path) : '';    
        var domain = options.domain ? '; domain=' + (options.domain) : '';    
        var secure = options.secure ? '; secure' : '';    
        document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');    
    } else { // only name given, get cookie    
        var cookieValue = null;    
        if (document.cookie && document.cookie != '') {    
            var cookies = document.cookie.split(';');    
            for (var i = 0; i < cookies.length; i++) {    
                var cookie = jQuery.trim(cookies[i]);    
                // Does this cookie string begin with the name we want?    
                if (cookie.substring(0, name.length + 1) == (name + '=')) {    
                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));    
                    break;    
                }    
            }    
        }    
        return cookieValue;    
    }    
}; 

/*用法
$.cookie('the_cookie'); // 获得cookie 
$.cookie('the_cookie', 'the_value'); // 设置cookie 
$.cookie('the_cookie', 'the_value', { expires: 7 }); //设置带时间的cookie 
$.cookie('the_cookie', 'the_value', { expires: 7, path: '/', domain: 'sosuo8.com', secure: true });
$.cookie('the_cookie', '', { expires: -1 }); // 删除 
$.cookie('the_cookie', null); // 删除 cookie 
*/